The geography of the U.S. State of Colorado is diverse, encompassing both rugged mountainous terrain, vast plains, desert lands, desert canyons, and mesas. Colorado is a landlocked U.S. state. In 1861, the United States Congress defined the boundaries of the new Territory of Colorado exclusively by lines of latitude and longitude, stretching from 37°N to 41°N latitude, and from 102°02'48"W to 109°02'48"W longitude (25°W to 32°W from the Washington Meridian).[1] Starting in 1868, official surveys demarcated the boundaries, deviating from the parallels and meridians in several places. Later surveys attempted to correct some of these mistakes but in 1925 the U.S. Supreme Court affirmed that the earlier demarcation was the official boundary.[2] The borders of Colorado are now officially defined by 697 boundary markers connected by straight boundary lines.[3] Colorado, Wyoming, and Utah are the only states that have their borders defined solely by straight boundary lines with no natural features.[4] The southwest corner of Colorado is the Four Corners Monument at 36°59'56"N, 109°2'43"W.[5][6] This is the only place in the United States where four states meet: Colorado, New Mexico, Arizona, and Utah.[4]
The summit of Mount Elbert at 14,440 feet (4,401.2 m) elevation in Lake County is the state's highest point and the highest point in the Rocky Mountains of North America.[7] Colorado has approximately 550 mountain peaks that exceed 10,000 feet (4,000 metres) elevation. The state's lowest elevation is 3,317 feet (1,011 m) at the point on the eastern boundary of Yuma County where the Arikaree River flows into the state of Kansas.[8] This is the highest low point of any state, and Colorado and Wyoming are the only two states that lie entirely above 3000 feet (1000 m) elevation.[9]
As is common in mountainous and adjacent areas, microclimates exist and weather is strongly influenced by orography. A notable regional atmospheric phenomenon is the Denver Convergence Vorticity Zone (DCVZ) and related Denver Cyclone occurring on the High Plains just east of Denver. The Rocky Mountains as a whole induce significant changes in weather afar, such as the Colorado low.
- ^ "An Act to provide a temporary Government for the Territory of Colorado" (PDF). Thirty-sixth United States Congress. February 28, 1861. Retrieved November 15, 2018.
- ^ "U.S. Reports: New Mexico v. Colorado, 267 U.S. 30 (1925)". Library of Congress. Retrieved 16 November 2018.
- ^ "Colorado is NOT a perfect rectangle". Fascinating Maps. Archived from the original on June 17, 2019. Retrieved November 15, 2018.
- ^ a b "Colorado is a rectangle? Think again". The Big Think, Inc. Retrieved November 15, 2018.
- ^ "Shared Solution: Four Corners". NGS Survey Monument Data Sheet. United States National Geodetic Survey. 2003-05-07.
- ^ The official Four Corners Monument is located at 36°59'56.31591″N, 109°2'42.62064"W, a short distance east of the 37°N, 109°02'48"W location Congress originally designated.
- ^ "MOUNT ELBERT". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. Retrieved December 18, 2014.
- ^ State of Colorado. "Colorado State Archives Geography Page". Colorado Department of Personnel & Administration. State of Colorado. Retrieved 22 September 2012.
- ^ https://www.usgs.gov/educational-resources/highest-and-lowest-elevations
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